Nano cesium tungsten bronze is often applied to produce office thermal insulating glass coating. And the prepared coating is a new type of high-performance transparent solar radiation shielding material.
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Some experts analyzed the optical properties of cesium tungsten bronze based on experimental results reported in the literature. Its potential for use as a transparent energy-saving material was evaluated using theoretical optical results. The results showed that cesium tungsten bronze exhibits excellent near-infrared radiation reflectance/absorption and high transmissivity of visible light, so it is ideal for use as a solar radiative filter for glass windows. In addition, cesium tungsten bronze provides perfect solar radiation shielding, suggesting that this material could be applied for compacted filters and nanoparticle-dispersed coatings. Two types of cesium tungsten bronze filters exhibited more than 80% transmissivity of visible light and excellent solar radiation shielding performance. And it indicates that the doping of the Cs ion into hex-WO3 induces a persistent n-type electronic conductivity with metal-like characteristics and dramatically enhances near-infrared radiation absorption while maintaining excellent visible light transparency.
